I would start him with waterfowl reason being. most of the time a lab will be a flushing dog. you will teach him to sit and stay in the blind with you. If you do it the other way as soon as the pup hears a gun shot it will run out of your duck blind looking for the birds which is not what you want it to do. you want it to retrieve on command. I have hunted with a lab that was initally a upland dog and it cant sit still in the duck blind and makes a lot of birds flare. Hope that helps